My engine is hurt...dangnabit

[**grumpy**]

My 60 has a 70's era 250 I6 and it never has run right since I bought it. I figured it was bad gas, because the gas was horrible.

But after tank removed, cleaned, lines filters etc, rebuilt carb, new cap,rotor, 3 sets of plugs, wires etc. No real change.

2 older guys I know played with carb, timing, changing plug gaps etc, and decided sounded like burnt exhaust valve, or head gasket between cylinders.

So I was gonna pull head, then a buddy says I better do compression test first.

160-170 on all cylinders but 6. It had 35. So I shot some oil into the cylinder and it jumped to 135. Then back to 35......

So No.6 is hurt. Likely a piston or ring I guess.

So out comes the 250..............